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Patent Searching and Data


Title:
FLAT SPRING FOR RAILROAD VEHICLE BOGIE
Document Type and Number:
WIPO Patent Application WO/2013/038673
Kind Code:
A1
Abstract:
A flat spring (10) for a railroad vehicle bogie according to the present invention comprises an upper surface member (12) formed from a fiber-reinforced plastic in which the reinforcing fibers are laminated so as to extend in the longitudinal direction, a lower surface member (14) formed from a fiber-reinforced plastic in which the reinforcing fibers are laminated so as to extend in the longitudinal direction, and a core member (16) disposed between the upper surface member (12) and the lower surface member (14). The core member (16) is configured from a fiber-reinforced plastic in which the reinforcing fibers are laminated in the widthwise direction, which is the direction orthogonal to the lamination direction in the upper surface member (12) and the lower surface member (14), in a manner such that the reinforcing fibers are inclined with respect to the bending neutral axis and intersect each other when viewed from the side of the core member (16).

Inventors:
KIMURA GAKU
FURUYA MITSUHIRO
NAKAO SHUNICHI
NISHIMURA TAKEHIRO
Application Number:
PCT/JP2012/005837
Publication Date:
March 21, 2013
Filing Date:
September 13, 2012
Export Citation:
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Assignee:
GH CRAFT LTD (JP)
KAWASAKI HEAVY IND LTD (JP)
KIMURA GAKU
FURUYA MITSUHIRO
NAKAO SHUNICHI
NISHIMURA TAKEHIRO
International Classes:
B61F5/30; B61F5/00; F16F1/18
Foreign References:
JPS61143257A1986-06-30
JPS5790433A1982-06-05
JPS5690771A1981-07-23
JPS56122838U1981-09-18
JPS47654A
JPS5694040A1981-07-30
JPH04197873A1992-07-17
JPH09301163A1997-11-25
Other References:
See also references of EP 2757016A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
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Claims: